Laptop dual boot DHCP or static IP

Felig · Apprentice Joined: 22 Jun 2004 Posts: 180

I'd like to set up my laptop networking so when at home, it can be a part of my home network with a static IP address, or I can boot it to use DHCP and a different firewall setup.

I think some kind of boot command line option would do the trick, but I don't know how to use it. It shows up in /proc/cmdline, and /sbin/functions.sh looks in there for a few parameters.

Can someone provide pointers on how to do this? I figure perhaps modify /etc/init.d/net.eth0 to read a different /etc/conf.d file, but that seems rather crude.

Also, how much of the networking setup would I need to change for DHCP vs static IP? I notice DHCP writes its own resolv.conf. What about outgoing mail? I run mini-qmail which forwards everything to a central machine when at home. DHCP would have to change a symlink in /usr/bin, but that's easy enough/ Are there other things which I woudl have to change depending on which way the network is configured?

How about wireless? Is this just DHCP, or would I need yet another command line option?

UberLord

Felig · Apprentice Joined: 22 Jun 2004 Posts: 180

Quickswitch looks like just the ticket, it is installing as I type. I also discovered that yes indeed, /proc/cmdline provides the boot params, and the /etc/conf.d/* files are just shell scripts, I can add any shell scripting I want in there, and /proc/cmdline is set by then.

Still some experimenting involved, that's the fun part.